I went with the Antec 1200 and the CP-850 power supply. The case is very roomy and the power supply is excellent. The PSU is larger than ATX sizes and it's designed to be used with this case. The connectors are all well labeled. The case routes all of the cables behind a panel so the cables aren't in the way of the fan flow.

My CPU tops out at 41 degrees Celsius with the fans on low, which I find excellent. I went with Prolimatech Megahelms heatsink. I may add a 2nd GTX275.